Shuttle



' Dec. 281926. 1,612,197

E. C. LOWE SHUTTLE Filed Sept. 25, 1924 fivefl orf V Edward GLOZUQ-Patented Dec. 28, 1926.

islitiiTED STATES PTENT OFFIQ EDWARD G. LOWE, F NEENAH, WISCONSIN,ASSIG-NOR TO KIMLARII"RUG COMPANY, OF NEENAH. WISCONSIN, A CORPORATIGNOF WISCONSIN.

SHUTTLE.

Application filed September 25, 1924.

This invention relates to shuttles for looms, but more particularly totension devices for the same and has for its primary object to provide asimple, economical and efiicient device of this character.

Further objects of my invention are to facilitate the threading of theshuttle; to reduce the cost of operation; to allow for the passage ofknots; to provide a finer and more rapid adjustment; to eliminate theusual bottom plate; to facilitate repair, particularly of the spring;and in general, to provide a new and improved tension device.

The many other objects and advantages of my invention will be betterunderstood by reference to the following specification when consideredin connection with the accompanying drawing, illustrating a selectedembodiment thereof, in which Fig. 1 is a plan view of a shuttle in whichis incorporated a tension device embodying the principles of myinvention.

Fig. 2 is a longitudinal section on the line 22 of Fig. 1.

Fig. 3 is a transverse section on the line 8-3 of Fig. 1, and

Figs. 4 and 5 are detail views.

Referring to the drawings, the present embodiment of my invention isprimarily intended for the weaving of rugs where a paper weft or fillingis used. Knots of considerable size quite frequently occur in this kindof filling and it is necessary that the tension device permit these topass through. The usual strap, or cop binder is not illustrated as thishas no relation to the filling tension.

The numeral 1 designates the double pointed shuttle body provided with acavity or chamber 2 having its Side walls serrated as at 3 forengagement with the cop 4. In shuttles of this nature particularlyintended for heavy work, the yarn or filler 5 is generally stripped fromthe bobbin and placed in the shuttle chamber without any centralsupport. The natural action of this yarn would be to expand into atleast one of the grooves of the saw-tooth formation and by suchinterlocking relation hold the yarn in place against being driven orjammed forwardly when the shuttle enters the boX.

The tension on the yarn is directly provided by oppositely disposedcoacting plates 7 and 8, which are shown detached in Figs.

- 1} and 5. The plates '7 and 8 are respectively Serial No. 739.755.

known as the upper and lower tension plates. The plate 7 is embedded inthe side walls as at 9 and 9 and held in position by a pin as 10. Thebottom tension plate 8 is hinged on a pin 11 and presses thefilleragainst the top tension plate 7. A spring 12 acts against the under faceof the plate 8 and the pressure is regulated by an adjusting screw 13. Adepending lug or rivet 14 is attached to the plate 8 to position thespring 12. This spring also permits the bottom plate to yield when aknot passes through the tension device.

A roller 15 is mounted on a stud 16 and secured by a nut 17 seated in arecess 18 in the base wall of the shuttle. The roller is retained on thestud by a washer 19 and screw 20. The roller is preferably flanged atthe top 2]. to prevent the filler climbing and the top face is cupped asat 22 to facilitate oiling without danger of soiling the filler. Thescrew fastening enables the roller to be easily removed for cleaning orreplacement. The pin 11 is preferably barbed near its point so that itwill get a better grip on the wood.

This tension device gives a finer and more rapid adjustment than oneusing a flat spring. The usual plate on the bottom of the shuttle hasbeen eliminated. Such plates have been the cause of much trouble as thejar causes the plate to become loose. The coil spring does notcrystallize or break as quickly as does a flat spring and this springmay be quickly and easily replaced without removing the entire tensiondevice. As soon as the screw 13 is removed, the spring 12 drops out anda new one may be instantly inserted.

The shuttle is threaded by passing the end of the yarn or filler 5between the tension plates 7 and 8, around the roller as indicated inFig. 1, and out through the slot 25 provided for the purpose in the sideof the shuttle.

The plates 7 and 8 are preferably set at a wide angle to permit fillerknots to pass through without being snapped off. The plates permit thefiller to flow or run freely and without any slack While the shuttle isin motion, but check it instantly when the shuttle stops. The plate 7 ispreferably notched or slotted at 26 to facilitate the threading. Theplate 8 is loosely mounted upon its pivot pin and floats to some extentlongitudinally or in the same-direction as that of the thread, the'pivot being s'ubstan tially provided with a slottor this purpose so thatthe plate will shift in either direction longitudinally or angularly andgive to the tension of the paper weft or thread, especially when passingknots, usually of considerable size in paper weft threads as used forfilling, thereby permitting the threads and knots to pass or give toprevent breakage thereofwhen there is unwinding checle ing restraint dueto contact of the cop or bobbin with the serrated walls of the shuttle.The tension is applied against the upper plate 7' Which is preferablyrigid. The plates fit closely the roller 15 about which the fillingpasses as it leaves the shuttle.

It will be obvious from the foregoing descri'ption that myv shuttletension device is simple and durable in construction and etficient inoperationi' I am aware that numerous changes may be made in the formandarrangement of the parts of my tension device Without departing from thespirit ot myv invention and I reserve the right tomalie all such asfairly fall within the scope'ot the followingc'laims,

I claim as my invention:

1'. In a shuttle, a. body having a chamber,

direction of advance of the filling, one of said plates beingyi-eldingly pressed towards the other plate andbeing adapted for limitedmovement in the same direction as that of the thread,

In-a=shuttle, abody'having a chamber, and a tensioning device for-thefilling as it leaves said chamber, including angularly disposedhorizontal tensioning plates converging inthe direction'ot advance ofthe filling, one of said plates being fixed and the other yieldinglypressed toward said fixed plate and slidable in the direction of itslength. 7

i. In a shuttle, a" body and a tensioning devicefor the filling as itleaves said chamber includin a rotatable and vertically disposedsubstantially cylindrical member disposed at one side of the chamber andabout which the filling passes, and oppositely disposed tensioningplates cohaving a chamber,-

and a tensioning device for the filling as it leaves said chamber,including. a revoluble member about which the filling passes, and

a pair of angularly disposed tensioning.

plates mountedindependently of tlierevolnq ble mem and coacting with thefilling during said passage.

7. In a shuttle, a body having a'chamber,

and a tensioning device for the fillinga's it leaves said chamber,including aapair of acting fiat tenslomng plates-disposedin an gularrelation, one of said" plates being floating and the other fixed;

8.- In a shuttle, a body havinga chamber-,

and a tensioning device fort-he filling I asit' leaves said chamber,including a pair of co'-' acting tensioning plates oneof said platesbeinghinged for floating actionand yield ingly pressed toward the otherplate.

9; In a shuttle, a body having a chamber,

and a. tensioning device for the filling as it:

leaves said chamber, including a pair ot coacting tensioning plates, oneof said plates being fixed and the other fioatingWit-h-limitedlongitudinal movement, and means for yieldingly pressingsaid floating;plate" to ward said fixed plate.

10. In a shuttle, a body having'a chamber,

and a tensioning: device for the filling as it leaves said chamber,including apair of co-' acting tensioning plates, one of said platesbeing fined and the otherplate' loosely mounted to permitalimitedlongitudinalfloating movement, and a spring aictingi against-saidpivote'd'plate to yieldingly press the same toward said fixed plate.

11. In a shuttle, body havingia chamber, and a tensioning device for thefillingi'as it leaves said chamber, including a roller around which thefilling passesa'nd a pair.

of co-acting tensionin plates fittingithe' roller, one of said'platesbeing providedwith a'threading slot to facilitate the insertion of thefillin'g'between said plates.

12. In a shuttle, a body havinga chamber; and a tensioning device forthefilling as it leaves said chamber, including angularly disposedoppositely inclined top and bottom tension plates arranged in ahorizontal direction extending transversely ofthe'chamb'er andconverging in the direction of the advance of the filling, the top platebeing rigid and fixed and the bottom plate yieldingly pressed toward thetop plate and movable in the direction of its length.

13. In a shuttle, a body having a chamber, and a tensioning device forthe filling as it leaves said chamber, including a roller mounted nearone side'of the chamber and around which the filling is trained, saidroller having an outwardly extending inclined flange at the top, andfastening means engaged Within the same, and transversely disposedtensioning plates in the chamber cutto conform to the periphery of theroller.

14. In a shuttle, a body having a chamber, and a tensioning device forthe filling as it leaves said chamber, including a plurality ofco-acting tensioning plates, at least one of said plates being fixed,and at least one of said plates being loosely pivoted to permit floatingmovement thereof bodily in the same direction as that of the thread.

15. In a shuttle, a body having a chamber, and a tensioning device forthe filling as it leaves said chamber, including a pair of coactingtensioning plates, one of said plates being fixed, a pivot pin on whichthe other plate is loosely pivoted for movement in substantially thesame direction as that of the thread, and adjustable spring means forholding the plates yieldingly pressed together.

EDWARD C. LOWE.

